Base 8 digital convolution sequence.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =720a(7) =5040a(8) =720a(9) =5760a(10) =12240a(11) =42480a(12) =182160a(13) =953280a(14) =5901840a(15) =42266160a(16) =11803680a(17) =96336000a(18) =216279360a(19) =841510080a(20) =3798599040a(21) =20676015360a(22) =131653290240a(23) =962925062400a(24) =394959870720